2040665 has 12 divisors (see below), whose sum is σ = 2692452. Its totient is φ = 1483680.

The previous prime is 2040653. The next prime is 2040679. The reversal of 2040665 is 5660402.

It can be written as a sum of positive squares in 2 ways, for example, as 1545049 + 495616 = 1243^2 + 704^2 .

It is not a de Polignac number, because 2040665 - 2⁶ = 2040601 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2040665.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1082 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (224371).

2^2040665 is an apocalyptic number.

It is an amenable number.

2040665 is a deficient number, since it is larger than the sum of its proper divisors (651787).

2040665 is a wasteful number, since it uses less digits than its factorization.

2040665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400 (or 3389 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2040665 is about 1428.5184633039. The cubic root of 2040665 is about 126.8402935961.

The spelling of 2040665 in words is "two million, forty thousand, six hundred sixty-five".